How can I make my C code faster?

COMPUTE BOUND

1. CHOOSE A BETTER ALGORITHM. Think about what the code is really doing.
2. WRITE CLEAR, SIMPLE CODE. Some of the very things that make code clear and readable to humans also make it clear and readable to compilers.
3. PERSPECTIVE.
4. UNDERSTAND YOUR COMPILER OPTIONS.
5. INLINING.
6. LOOP UNROLLING.
7. LOOP JAMMING.
8. LOOP INVERSION.

How is memory access optimized?

Memory access order

1. scan arrays in increasing order;
2. scan multi-dimensional arrays using the rightmost index for innermost loops;
3. in class constructors and in assignment operators ( operator= ), access member variables in the order of declaration.

How do you maximize the proportion of local memory access?

Practical Coding Tips

1. Rearrange (code, data): Change layout to increase spatial locality.
2. Reduce (size, number of cache lines read): Smaller/smarter formats, compression.
3. Reuse (cache lines): Increase temporal (and spatial) locality.

What is the maximum memory a program should access to maximize its performance?

If your computer has less than 4 GB of RAM, adding more RAM would greatly improve its performance. 4-6 GB: This standard RAM capacity will handle an average user’s tasks, such as web browsing, working in Word documents, and emailing, with ease.

Which is the fastest cache mapping function?

Associative Mapping
Associative Mapping – This enables the placement of any word at any place in the cache memory. It is considered to be the fastest and the most flexible mapping form.

What is the average latency ns for memory access?

Average Memory Access Time (AMAT) For example, if a hit takes 0.5ns and happens 90\% of the time, and a miss takes 10ns and happens 10\% of the time, on average you spend 0.4ns in hits and 1.0ns in misses, for a total of 1.4ns average access time.

How do I increase virtual memory on 8gb RAM?

To calculate the “general rule” recommended size of virtual memory in Windows 10 per the 8 GB your system has, here’s the equation 1024 x 8 x 1.5 = 12288 MB. So it sounds as if the 12 GB configured in your system currently is correct so when or if Windows needs to utilize the virtual memory, the 12 GB should suffice.